EP0074696B1 - Informationswiedergabe-System - Google Patents

Informationswiedergabe-System Download PDF

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Publication number
EP0074696B1
EP0074696B1 EP82201125A EP82201125A EP0074696B1 EP 0074696 B1 EP0074696 B1 EP 0074696B1 EP 82201125 A EP82201125 A EP 82201125A EP 82201125 A EP82201125 A EP 82201125A EP 0074696 B1 EP0074696 B1 EP 0074696B1
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EP
European Patent Office
Prior art keywords
display
memory
bus
control
signals
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Expired
Application number
EP82201125A
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English (en)
French (fr)
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EP0074696A1 (de
Inventor
Martin Johannes Binder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cessione vidcom Rentservice Bv
Original Assignee
KREON SCREEN INTERNATIONAL BV
VIDCOM RENTSERVICE BV
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Application filed by KREON SCREEN INTERNATIONAL BV, VIDCOM RENTSERVICE BV filed Critical KREON SCREEN INTERNATIONAL BV
Priority to AT82201125T priority Critical patent/ATE12331T1/de
Publication of EP0074696A1 publication Critical patent/EP0074696A1/de
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information
    • H04N5/70—Circuit details for electroluminescent devices

Definitions

  • the present invention concerns an information display system, comprising a computer device having at least one input member for receiving video information and a processor member connected to said input member for processing and/or controlling digital video information contained in and/or obtained from the video information received from the input member and/or digital video information generated by the computer device itself in order to produce display signals and at least one display panel having a display surface.
  • said known system is a gray scale display system as improvement over a mere black and white display system, said display system comprising a display panel consisting of light emitting devices, specifically incandescent lamps arranged in a matrix.
  • the aforementioned gray scale display is obtained by selective excitation of said incandescent lamps and control of the respective levels of excitation.
  • the input video signal is quantized and digitized to obtain digital values next to synchronisation signals.
  • Each light emitting device or display element is energized by an amount proportional to the light intensity of a quantized segment of the actual scene, whereby to each lamp an individual numerical address is assigned.
  • eight levels inclusive black and white are possible.
  • the memory of the data processor essentially is an image of the matrix of incandescent lamps.
  • the main drawback of the known system is its poor resolution due to the fact that the pixels are determined by the dimensions of the incandescent lamps, which also determine the maximum brightness to be obtained. Further the response rate of said incandescent lamps is limited. Further with said known device no colour display is possible.
  • the present invention aims to obviate at, least the above mentioned drawbacks and provides for a system of the above mentioned nature, characterized in, that the system further comprises a communication channel having a data bus and a control bus, connected to the processor member of the computer device for the transmission of the display data and the control signals, respectively, said display data and control signals together forming said display signals, a memory device connected to the data bus for storing the display data received from the data bus, a memory control device connected to the control bus for controlling the storage of display data in and reading the stored display data from the memory device in response to control signals received from the control bus, and a digital to analogue converting device connected to the memory device for producing analogue display signals during reading of the memory device, wherein said at least one display panel consists of a plurality of electronic display units each capable of displaying an image by itself, arranged side by side in a manner such that the respective display surfaces together constitute the display surface of the display panel.
  • the electronic display units making up the display panel each comprise a display device capable of displaying preferably a colour image or colour alpha numeric information by itself, for instance a cathode ray tube or a flat panel display device.
  • the main advantage of the display system of the present invention is its enormous resolution and brightness.
  • German patent application 2,558,704 is known per se a display panel comprising cathode ray tubes arranged side by side.
  • said known display panel to each cathode ray tube belongs a display screen and an optical magnifying system, whereby said optical magnifying system is placed between a respective display screen and the display surface of a respective cathode ray tube. Therefore the resolution of said display panel as well as the maximum brightness thereof will be lowered considerably.
  • the display surface of the display panel may vary between, for example, 2 ms 2 and 200 ms 2 or more, whilst the depth of the display panel remains the same, for example, 50 cms, independently of the size.
  • the display panel is formed by arranging a plurality of display tubes side by side in a frame.
  • the system embodying the present invention might be designated a super-macro-image television.
  • Video programmes By means of the system embodying the present invention television programmes, video programmes and/or information programmes can be displayed on a large screen.
  • Video programmes may be received from a video recorder or a video camera.
  • logos and animation images can be written on the display surface of the display panel.
  • the information may be included both separately and simultaneously in the current television or video programme.
  • the information can be directly written by a keyboard on the display surface or directly by means of pre-programmed video cassettes.
  • an image can be displayed on a large scale, whilst a plurality of images can be combined into one large image to be displayed.
  • the display panel has a very high resolution and a high luminance exceeding many times that of a normal television image. This means that the display panel can be used also in davliqht.
  • the system embodying the invention is particularly suitable for advertising, video performances, information transmission, film display or combinations of these possibilities.
  • Figure 1 shows a highly simplified block diagram of the information display system in accordance with the invention.
  • Reference numeral 1 designates a computer device having a video input 101 and being connected to a data bus 102, a control-bus 103 and an address-bus 104.
  • the computer device may furthermore be connected to peripheral apparatus 6, for example, a terminal station and a memory for video information to be displayed produced by the computer device.
  • the digital video information produced by the computer device may or may not be displayed together with the received video information processed or not processed and being of digital, analogous nature or a combination thereof on a display panel.
  • the system embodying the invention comprises at least one display panel 5, a memory device 2, a memory control-device 3 and a digital/analogue conversion device 4.
  • the digital display data of the computer device are transmitted through the data bus to the memory device, whereas the address and control-signals of the computer are transmitted by means of the address bus and the control-bus respectively to the memory control-device 3.
  • the memory control-device generates control-signals on a line 103' to control the memory device 2 and control-signals on a line 103" to control the digital/analogue converter, which receives display data signals through a line 102'.
  • the digital/analogue converter 4 passes analogue display signals through a line 107 to the display panel 5.
  • the video information received by the computer device may be of a digital or analogue nature or a combination thereof.
  • the video input of the computer may be connected to a member capable of detecting the nature of the incoming video information and/or to an analogue/digital converter for converting incoming analogue video information into digital video information.
  • the computer may have separate inputs for analogue and for digital video information.
  • the memory control-device 3, the memory device 2 and the digital/analogue conversion device 4 may each be formed by a plurality of the respective members co-operating with different display panels 5.
  • each display panel 5 consists of a plurality of electronic display units 52 ( Figure 2) each having a display surface 53.
  • the electronic display units are arranged side by side in the frame 51 of the display panel in a manner such that the respective display surfaces 53 together constitute the display surface of the display panel, the latter surface being marked by a dot-and-dash outline designated by reference numeral 56.
  • the display surface of the display panel may be flat or curved, for example, corresponding with the curvatures of the display tubes employed.
  • the display panel 1 is composed of identical units, replacement can be carried out in a simple manner.
  • each display panel 5 the memory device 2, the memory control-device 3 and the digital/analogue converter 4 comprise at least one individual member for each electronic display unit of the display panel.
  • each memory device and memory control-device may comprise for each electronic display member two respective members and the digital/analogue converter may comprise for each colour two respective members, i.e. in the case of colour signals, six digital/analogue converting members.
  • the system embodying the invention may, of course also be designed for the sole reproduction of black-white video information, whilst the system may furthermore be designed for multiple interlacing.
  • the computer device 1 processes video information received at the input 101 in a manner such that this information, which is displayable with the aid of a single electronic display unit 52 can now be displayed on a display panel 5 of considerably larger dimensions by partial images contained in said video information to be displayed on one individual electronic display unit of the display panel in a manner such that by allotting partial images to defined electronic display units the same image is formed, but of much larger dimensions and improved resolution.
  • the display panel may even be composed of 400 display screens or television display tubes, each of which is capable of displaying a partial image 1/400th the original image, electronically magnified to the dimensions of the original image size.
  • the system embodying the present invention might, therefore, be termed an image magnifying system. Owing to the digital processing the resolution is, however, not adversely affected in contrast to the effect of optical means.
  • a further possibility of the system embodying the invention resides in using a number of electronic display units of continuous display surfaces for reproducing an original image on an enlarged scale and using remaining electronic display members for reproducing additional video information generated by- the computer itself and/or introduced with the aid of a terminal station and a memory.
  • Figure 3 shows the block diagram of Figure 1 more in detail for the case in which the received video information consists of analogue colour signals and a synchronizing signal and in which furthermore the interlacing system is employed.
  • the computer device comprises a processor member 10, a multiplexer 11, an analogue/digital converting member 12, a data interface member 13, a clock generator 14, control-members 15 and 16 and an amplifier 17.
  • the computer device is furthermore connected to peripheral apparatus such as a terminal station 61 and a memory 62.
  • the memory and the memory control-device is shown only that part which cooperates with one electronic display unit, in particular, comprising a colour display tube 57 and a television board 50.
  • the memory the memory control and the digital/analogue converter are doubled for each electronic display unit.
  • a dot-and-dash outline designated by reference symbol I will be described hereinafter.
  • a memory member, a memory control-member and three digital/analogue converting members for each frame of a half image to be displayed on the display tube of each electronic display unit.
  • the memory member, the memory control-member and the digital/analogue converting member may, however, be designed so that in common for the frames of an image to be displayed on the display tube of each electronic display unit there are provided only one memory member, one memory control-member and three analogue/digital converting members, the memory member having double the capacity of the memory members of Figure 3 in case of duplicate interlacing.
  • the respective memory control-members control the memory members in a manner such that when one half of a memory member is read and displayed synchronously herewith on the respective display tube, the other half of the memory is written or supplemented.
  • the electronic implementation is simpler than in the other case mentioned above as a result of the less complex control-requirements.
  • each electronic display unit comprises a display tube or a different screen member and three insertable printed circuits, one print having the required electronic means for generating at least one electron beam in the case of a display tube, for deflecting the electron beam(s) and for controlling the instantaneous intensity thereof and a second print and, preferably, a third print identical to the second print having each a memory member, a memory control-member and a number of digital/analogue converting members equal to the number of electronic beams.
  • the display panel is composed in this case of identical units.
  • the interlacing part I is connected by means of a communication channel 10 to the computer device.
  • the communication channel 100 comprises the above-mentioned data bus 102, the control-bus 103 and the address-bus 104 and part therefrom a clock-bus 105 and a synchronisation-bus 106.
  • the communication channel may comprise cables, infrared or fibre-optical ways.
  • the clock generator 14 produces a clock signal and applies the same to the multiplexer 11, the analogue/digital converting member 12, the processor member 10, the data coupling member 13 and by means of the amplifier 17 to the clock-bus.
  • the clock generator 14 produces sampling pulses of a frequency as high as is required for display with a large bandwidth input.
  • the incoming video information includes the colour video signals red, green and blue, which are applied to the multiplexer 11 and a synchronizing signal applied to the processor member 10, the data interface member 13 and the synchronizing bus 106.
  • the colour video signals multiplexed by the multiplexer 11 are digitalized in the analogue/digital converter 12 and then applied to the data interface member and subsequently to the processor member in order to process the data concerned in accordance with a programme or instructions furnished by the terminal station 61 and/or the memory 62.
  • This processing can be concerned with a processing of the incoming video information, but also with the combination thereof with internally generated video information.
  • the data interface member 13 provides display data to the data bus 102.
  • one driving member may be used for three electronic display units.
  • the driving members 15 which pass the address and control signals of the processor member to the control-bus.
  • the processor member applies furthermore a control- signal to the data coupling member.
  • Each memory control-member 31 is connected to the address bus 104, the control-bus 103, the clock-bus 105 and the synchronisation bus 106.
  • Each memory member 21 is connected to the data bus and receives through the line 104' address signals and through the line 103' control-signals from the memory control-member 31 concerned.
  • the digital/analogue converting members 41, 42 and 43 for red, green and blue respectively receive through the line 103" a fly-back suppression signal from the memory control-member 31 and through the lines 102R, 102G and 102'B respectively the respective display data and in turn they apply through the lines 107R, 107G and 107B analogue display signals to the television board 50, which board is also connected to the synchronization bus, which means that all display screens 57 are synchronously scanned or written.
  • a memory control-member 31 is selected by an address and each memory member 21 receives instructions by means of the data and control-bus.
  • the further data address signals are video information.
  • the data are stored in the memory in accordance with the address.
  • Reading of the memory members is synchronized by the synchronizing signal contained in the incoming video information.
  • the control is furthermore such that reading synchronous with the scan of the first interlacing part I supplements the second interlacing part II.
  • the system embodying the invention comprises at least one display device having a large screen controlled by a computer device.
  • the object of the system according to the present invention is to display video information and information processed and controlled by a computer device on large surfaces. In synchronism with the image display sound may, of course, be reproduced.
  • the electronic display members comprise cathode-ray tubes or display tubes 42.
  • the following part of this description is in particular concerned with the perfection of the visual impression, that is to say, the impression that the display panel 5 functions as a single screen, whilst the display surface is formed by the respective discrete surfaces 53 of the display tubes 52.
  • These discontinuities can be minimized by disposing the display tubes 52 as near one another as possible.
  • the discontinuities in smaller panels will be more disturbing than in large panels, since the viewing distance from the panel is larger in the latter case.
  • a further problem of the display panel in the system embodying the invention may reside in that, as is known, the front faces of the display tubes are curved. This problem is particularly involved when the display tubes are mounted, so to say, in a flat plane.
  • each display tube 52 In front of the front side of each display tube 52 is disposed a Fresnel lens in a manner such that the image displayed by the respective display tube is magnified to an extent such that the respective images of partial images join one another and are transformed in a flat plane determined by the Fresnel lenses.
  • this solution is particularly suitable for small display panels.
  • a solution for the problem of obtaining coplanar images displayed by the various display tubes 52 is particularly related to the display tubes themselves.
  • FIG. 4 shows a detail of a display tube to be used in the panel in accordance with the invention.
  • the centre line of the display tube is designated by M and the screen is designated by reference numeral 61.
  • the screen 61 is a curved surface having phosphor trios in the case of colour display tubes.
  • the front side of the display tube designated by reference numeral 62 is flat and adjoins the curved outer face of the screen 61.
  • optical fibres i.e.
  • the fibres 64 transform the curved surface of the screen 61 into a flat surface 62. Owing to the flat structure of the front plates of the display tubes they can be arranged more closely to one another, whilst the remaining interstice, at least at the level of the front plate, can be filled out with an elastic filler, for example, silicone cement.
  • the advantage of using at least partly transparent silicone cement is that the silicone cement will absorb to some extent the radiation of the front plates between which it is sandwiched so that the aforesaid discontinuities are at least less conspicuous and under favourable conditions they will not attract the attention.
  • C reference numeral 70 designates the screen of a conventional display tube having a curved front plate 71.
  • gaps 72 are formed, which give rise to the aforesaid discontinuities.
  • prisms 73, 73' At the periphery of the front plate 71 of the display tube 70 are placed prisms 73, 73' so that the prisms arranged on neighbouring display tubes co-operate with one another as is indicated in Figures 5A, C.
  • Figure 5B shows an optically transparent bar 74 or light guide, which has reflective layers on the long sides, for example a metal foil 75.
  • the bars are disposed in re-entrant positions one on the other.
  • the effect of the prisms is based on the principle of light conduction by reflection at the walls.
  • the bars 74 are thus arranged at an angle to the front plate 71 of the display tube 70.
  • the effect of the prisms is based on total reflection in a parallel transparent body.
  • filling out the discontinuities in the display is not based on information transmission but on the transmission of colour and luminance or else the colour and light/dark effect on the screen. The continuity is thus essentially obtained as a confused image.
  • the cross-sectional areas of the bars 74 may be related to the size of the image dot.
  • Figure 5C illustrates the use of conical light conductors 74' in the prisms 73'.
  • the light conductors are arranged in contact with one another and adjoin the front plate of the display tube and are in line with one another on the other side of the prism in a manner such that they are directed in positions (arrow B) opposite to the curvature (arrow A) of the front plate of the display tube.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Digital Computer Display Output (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Circuits Of Receivers In General (AREA)

Claims (14)

1. Informationswiedergabesystem mit einem Computer, mit wenigstens einem Eingangsteil für den Empfang von Videoinformationen und einem an den Eingangsteil angeschlossenen Prozessorteil zum Verarbeiten und/oder Steuern digitaler Videoinformationen, die in den vom Eingangsteil empfangenen Videoinformationen enthalten sind und/oder aus diesen Videoinformationen erhalten werden und/oder digitaler Videoinformationen, die vom Computer selbst generiert werden, damit Wiedergabesignale erzeugt werden, und wenigstens einer Wiedergabetafel mit einer Wiedergabe fläche, gekennzeichnet durch einen Übertragungskanal mit einem Datenbus und einem Steuerbus, der an den Prozessorteil des Computers zum Übertragen der Wiedergabedaten bzw. der Steuersignale angeschlossen ist, wobei die Wiedergabedaten und die Steuersignale zusammen die Wiedergabesignale bilden, eine an den Datenbus angeschlossene Speichervorrichtung zum Speichern der vom Datenbus empfangenen Wiedergabedaten, eine an den Steuerbus angeschlossene Speichersteuervorrichtung zum Steuern des Speicherns von Wiedergabedaten in der Speichervorrichtung und zum Lesen der gespeicherten Wiedergabedaten aus der Speichervorrichtung in Abhängigkeit von vom Steuerbus empfangenen Steuersignalen und eine Digital-Analog-Umsetzungsvorrichtung, die an die Speichervorrichtung angeschlossen ist und analoge Wiedergabesignale während des Lesens der Speichervorrichtung erzeugt, wobei die wenigstens eine Wiedergabetafel aus mehreren elektronischen Wiedergabeeinheiten besteht, die jeweils allein ein Bild darstellen können und Seite an Seite so angeordnet sind, daß die jeweiligen Wiedergabeflächen zusammen die Wiedergabefläche der Wiedergabetafel bilden.
2. Informationswiedergabesystem nach Anspruch 1, dadurch gekennzeichnet, daß die Speichervorrichtung und die Speichersteuervorrichtung für jede elektronische Wiedergabeeinheit wenigstens ein Speicherglied bzw. ein Speichersteuerglied enthalten, daß der Übertragungskanal ferner einen Adressenbus enthält, der an den Prozessorteil angeschlossen ist, während jedes Speicherglied an den Daten bus und jedes Speichersteuerglied an den Steuerbus und an den Adressenbus angeschlossen ist und daß der Prozessorteil Mittel enthält, die Videoinformationen so verarbeiten und Adressensignale so erzeugen, daß in wenigstens zwei an einzelne elektronische Wiedergabeeinheiten angeschlossene Speicherglieder ein solcher verarbeiteter Teil wenigstens der vom Eingangsteil empfangenen Videoinformation abgespeichert wird, daß die betroffenen elektronischen Wiedergabeeinheiten wenigstens zur Wiedergabe eines Originalbildes zusammenarbeiten, das in der am Eingangsteil empfangenen Videoinformation enthalten ist.
3. Informationswiedergabesystem nach Anspruch 1 oder 2, bei welchem die ankommenden Videoinformationen analoge Schwarz/Weiß- oder Farb-Videosignale und Synchronisierungssignale enthalten oder aus solchen Signalen bestehen, dadurch gekennzeichnet, daß der Eingabeteil eine Multiplexer-Teilbaueinheit zum Multiplexieren. der Schwarz/Weiß-Videosignale oder der Rot-, Grün- und Blau-Videosignale zum Anlegen der multiplexierten Signale an die Analog-Digital-Umsetzungsvorrichtung enthält, daß der Ubertragungskanal einen Synchroniserungsbus zum Übertragen von Synchronisierungssignalen enthält, während der Eingangsteil die Synchronisierungssignale dem Prozessorteil und dem Synchronisierungsbus zuführt und die Speichersteuerglieder sowie die elektronischen Wiedergabeeinheiten an den Synchronisierungsbus angeschlossen sind, und daß die Digital-Analog-Umsetzungsvorrichtung, die mit jedem Speicherglied verbunden ist, einen Digital-Analog-Umsetzer für Schwarz/Weiß oder einen Digital-Analog-Umsetzer für Rot, Grün und Blau enthält.
4. Informationswiedergabesystem nach Anspruch 3, wobei die ankommenden Videoinformationen ineinander verschachtelte Fernseh-Videosignale enthalten, dadurch gekennzeichnet, daß jede elektronische Wiedergabeeinheit folgendes enthält: eine Wiedergaberöhre, ein Wiedergabeglied zur Erzeugung wenigstens eines Elektronenstrahls und zu dessen Ablenkung sowie zur Steuerung seiner momentanen Intensität, und für jedes Raster eines Halbbildes ein Speicherglied, ein Speichersteuerglied sowie ein oder drei Digital-Analog-Umsetzungsglieder, und daß jedes Speichersteuerglied ein Rücklaufunterdrückungssignal für ein bzw. drei Digital-Analog-Umsetzungsglieder erzeugt.
5. Informationswiedergabesystem nach einem der vorhergehenden Ansprüche, wobei jede elektronische Wiedergabeeinheit eine Wiedergaberöhre enthält, dadurch gekennzeichnet, daß auf der Vorderseite der Frontplatte jeder Wiedergaberöhre der Wiedergabetafel eine Flache Fresnel-Linse so angebracht ist, daß die Bilder benachbarter Wiedergaberöhren so vergrößert werden, daß das von der Tafel wiedergegebene Bild frei von Diskontinuitäten ist.
6. Informationswiedergabesystem nach Anspruch 5, dadurch gekennzeichnet, daß die Fresnel-Linsen mindestens 60 Rillen/cm haben.
7. Informationswiedergabesystem nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Fresnel-Linsen vor den Frontplatten der jeweiligen Wiedergaberöhren wenigstens ineinander eingreifend angebracht sind.
8. Informationswiedergabesystem nach einem der Ansprüche 1 bis 4, wobei jede Wiedergabeeinheit eine Wiedergaberöhre enthält, dadurch gekennzeichnet, daß eine Seite der Frontplatte in Anpassung an den Bildschirm der Wiedergaberöhre geformt ist und auf der anderen Seite flache ist und daß in der Frontplatte Lichtleitfasern so angebracht sind, daß sie sich von der an den Bildschirm angrenzenden Seite der Frontplatte zur flachen Seite der Frontplatte so erstrecken, daß sie sich von der Bildschirmmitte aus fächerartig gegen den Umfang des Bildschirms zur flachen Seite der Frontplatte hin erstrecken.
9. Informationswiedergabesystem nach einem der Ansprüche 1 bis 4, wobei jede Wiedergabeeinheit der Tafel eine Wiedergaberöhre enthält, dadurch gekennzeichnet, daß am Umfang der Frontplatte jeder Wiedergaberöhre Prismen so angeordnet sind, daß sie die bildfreien Lücken zwischen den jeweiligen Frontplatten der Wiedergaberöhren der Wiedergabetafel optisch ausfüllen.
10. Informationswiedergabesystem nach Anspruch 9, dadurch gekennzeichnet, daß die Prismen benachbarter Wiedergaberöhren sich zumindest im wesentlichen aneinander anschließen.
11. Informationswiedergabesystem nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß jedes Prisma aus mehreren lichtdurchlässigen Stäben gebildet ist, die mittels einer Schicht aus reflektierendem Material voneinander getrennt sind, wobei die Gruppe der verschiedenen Stäbe so ausgebildet ist, daß sie auf der Seite des Prismas, die der an die Wiedergaberöhre angrenzenden Seite gegenüberliegt, relativ zueinander versetzt sind.
12. Informationswiedergabesystem nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß jedes Prisma aus mehreren relativ aneinander angrenzenden konischen Lichtleitern gebildet ist.
13. Informationswiedergabesystem nach Anspruch 12, dadurch gekennzeichnet, daß die Lichtleiter so angeordnet sind, daß das Prisma an einer Seite an die Frontplatte der Wiedergaberöhre angrenzt, während sie auf der anderen Seite in einer Linie liegen, wobei diese Linie der Krümmung der Frontplatte der Wiedergaberöhre entgegengesetzt liegt.
14. Wiedergabetafel, geeignet für die Verwendung in einem System nach einem der Ansprüche 5 bis 13.
EP82201125A 1981-09-10 1982-09-10 Informationswiedergabe-System Expired EP0074696B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82201125T ATE12331T1 (de) 1981-09-10 1982-09-10 Informationswiedergabe-system.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8104185 1981-09-10
NL8104185A NL8104185A (nl) 1981-09-10 1981-09-10 Informatie weergevend stelsel.

Publications (2)

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EP0074696A1 EP0074696A1 (de) 1983-03-23
EP0074696B1 true EP0074696B1 (de) 1985-03-20

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EP (1) EP0074696B1 (de)
AT (1) ATE12331T1 (de)
DE (1) DE3262684D1 (de)
NL (1) NL8104185A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761641A (en) * 1983-01-21 1988-08-02 Vidcom Rentservice B.V. Information display system
NL8501424A (nl) * 1985-05-17 1986-12-16 Philips Nv Optisch beeldvergrotend element, informatie-weergeefeenheid bevattende een dergelijk element en informatie-weergeefpaneel bevattende een aantal van dergelijke eenheden.
JP2513180B2 (ja) * 1986-01-13 1996-07-03 ソニー株式会社 ビデオテックス表示装置
US4746981A (en) * 1986-06-16 1988-05-24 Imtech International, Inc. Multiple screen digital video display
US5111303A (en) * 1989-02-27 1992-05-05 Pioneer Electronic Corporation Video signal recording system and picture display system in a high-definition television system
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ATE12331T1 (de) 1985-04-15
DE3262684D1 (en) 1985-04-25
EP0074696A1 (de) 1983-03-23
NL8104185A (nl) 1983-04-05

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